The automobile fault code P1620 indicates a problem with the Engine Coolant Switch.
The most common symptom is the Engine Light being ON or the Service Engine Soon Warning Light.
The cause of this fault code can be a faulty Engine Coolant Switch, an open or shorted harness, or a poor electrical connection in the Engine Coolant Switch circuit. To fix this issue, you should visually inspect the wiring harness and connectors for any damage.
Look for broken, bent, pushed out, or corroded pins in the connectors. The repair time for this issue is estimated to be around 1.0 hour. It is important to address this problem promptly to prevent further damage to the engine.
Repair Importance Level | 10.0 (Out of 10) |
Estimated Repair Time | Approximately 1.0 hour |
Repair Difficulty Level | 10.0 (Out of 10) |
Unveiling The Mystery: Symptoms Of Fault Code P1620 Revealed!
When the engine light is on or the service engine soon warning light is illuminated, it could be a sign of the p1620 fault code.
- The symptoms of the automobile fault code p1620 include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.
Unraveling The Mystery: What Causes Fault Code P1620?
The automobile fault code p1620 can be caused by a faulty engine coolant switch, open or shorted harness, or poor electrical connection in the circuit.
- The fault code P1620 can be caused by the following: 1.
- Faulty Engine Coolant Switch.
- 2.
- Engine Coolant Switch harness is open or shorted.
- 3.
- Engine Coolant Switch circuit has a poor electrical connection.
Fixing Code P1620: Simple Steps To Resolve The Issue
To fix the p1620 fault code, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.
- To fix the automobile fault code p1620, you need to follow these steps: 1.
- Check the possible causes mentioned above.
- 2.
- Visually inspect the wiring harness and connectors related to the fault code.
- 3.
- Look for any damaged components.
- 4.
- Check for broken, bent, pushed out, or corroded pins in the connectors.
- The estimated repair time for this fix is 1.0 hour.
Cracking The Code: P1620 – Cost And Complexity Unveiled!
The factors influencing the cost of diagnosing and fixing the automobile fault code p1620 based on the estimated repair time of 1.0 hour include the hourly rate charged by auto repair shops, which typically ranges between $75 and $150.
P1620 Fault Code: Understanding The Description And Troubleshooting Steps
The P1620 fault code indicates a low engine coolant circuit issue.
This means that the Powertrain Control Module (PCM) has detected that the Engine Coolant Switch signal was low for 20 seconds while the engine was running. This low signal indicates an open circuit in the engine coolant system.
When this fault code appears, it is important to address it promptly to prevent any potential damage to the engine.
An open circuit in the engine coolant system can lead to overheating and other serious issues.
By diagnosing and fixing the cause of the low engine coolant circuit, you can ensure the proper functioning of your vehicle’s cooling system and prevent any further complications.
FAQ
If you see the Engine Light or Service Engine Soon Warning Light illuminated in your car, it could be due to the fault code P1620. This code is often triggered by a faulty Engine Coolant Switch, an open or shorted harness, or a poor electrical connection in the Engine Coolant Switch circuit. To fix this issue, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded pins in the connectors. Don’t forget to check the “Possible Causes” mentioned above for a more comprehensive solution.
If you’re dealing with the P1620 fault code and your engine light is on, it’s time to take action. The culprit could be a faulty engine coolant switch, an open or shorted harness, or a poor electrical connection. To fix this issue, start by visually inspecting the wiring harness and connectors. Look for any signs of damage, such as broken or bent pins, corrosion, or components that are out of place. Don’t delay – check these possible causes and get your engine back in top shape.
When resolving the P1620 fault code, start by checking for damaged components and connector’s pins. This can be done by visually inspecting the related wiring harness and connectors. Look for any signs of damage such as broken, bent, pushed out, or corroded pins. By doing so, you can identify any issues with the Engine Coolant Switch harness and circuit, which may be causing the engine light to turn on. Take the necessary steps to repair or replace any damaged components or pins to resolve the issue.

Wrap Up
If your engine light is on, it could be due to a faulty engine coolant switch or issues with the switch’s harness or circuit connection. To fix this, visually inspect the wiring harness and connectors for any damage. Also, check for broken, bent, pushed out, or corroded pins on the connectors.